FreeBSD Multimedia
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Tag: syslog
-
Central
Syslog
Source: bsdtalk
Added: 25 January 2008
Tags: bsdtalk, syslog
Ogg version (7
minutes), MP3
version (3 Mb, 7 minutes)
Setting up a central syslog server.
- If you are concerned about the security of your logs, use a dedicated machine and
lock it down.
- Keep clocks in sync.
- You may need to change log rotation schedule in /etc/newsyslog.conf. You can rotate
based in size and/or time. This can be as much a policy decision as a hardware
decision.
- On central log host, change syslogd flags to listen to network. Each BSD does this
differently, so check the man pages. Also, check out the -n flag for busy
environments.
- Make sure host firewall allows syslog traffic through.
- Be careful to limit syslog traffic to just the trusted network or hosts. FreeBSD man
page refers to syslogd as a "remote disk filling service".
- For heavy logging environments, it is important to have a dedicated network. A down
syslogd server can create a lot of "ARP who-has" broadcasts.
- Most network devices such as printers and commercial firewalls support sending to a
central syslog server. Take a look at "Snare" for Windows hosts.
- To send messages from a Unix host, specify the host name prepended with @ instead of
a file for logging in /etc/syslog.conf. For example, change /var/log/xferlog to
@loghost.mydomain.biz. You can also copy and edit the line to have it log to both a local
file and a remote host.